package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();
        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);
        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }
        //密码比对
        //进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //System.out.println(password);
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 保存员工信息
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee=new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);
        //设置用户状态，默认为正常状态，1表示正常。0表示锁定
        employee.setStatus(StatusConstant.ENABLE);
        //设置密码，默认密码123456
        String password = DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes());
        employee.setPassword(password);
        // employee.setCreateTime(LocalDateTime.now());
        // employee.setUpdateTime(LocalDateTime.now());
        //employee.setCreateUser(BaseContext.getCurrentId());
        // employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.insert(employee);

    }

    /**
     * 分页查询
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> page= employeeMapper.pageQuery(employeePageQueryDTO);
        Long total=page.getTotal();
        List<Employee> reconds=page.getResult();
        return new PageResult(total,reconds);
    }

    /**
     * 改变状态
     * @param status
     * @param id
     */
    @Override
    public void statusChange(Integer status, Long id) {
        /*Employee employee = employeeMapper.getById(id);
        employee.setStatus(status);
        employee.setUpdateTime(LocalDateTime.now());
        //TODO 后期需要改为当前密码用户的id
        employee.setUpdateUser(BaseContext.getCurrentId());*/
        Employee employee=Employee.builder()
                .status(status).id(id)
                //.updateTime(LocalDateTime.now())
                //.updateUser(BaseContext.getCurrentId())
                .build();
        employeeMapper.update(employee);
    }

    @Override
    public Employee getById(Long id) {
        Employee employee=employeeMapper.getById(id);
        employee.setPassword("*********");
        return employee;
    }

    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee=new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);
        employeeMapper.update(employee);
    }

    /**
     * 修改密码
     * @param passwordEditDTO
     */
    @Override
    public Result editPassword(PasswordEditDTO passwordEditDTO) {
        Long id=passwordEditDTO.getEmpId();
        Employee oldEmployee=employeeMapper.getById(id);
        String password = oldEmployee.getPassword();
        String ScanPassword = passwordEditDTO.getOldPassword();
        if(!password.equals(ScanPassword)){
            return Result.error("密码错误");
        }
        Employee newEmployee=new Employee();
        newEmployee.setId(id);
        newEmployee.setPassword(passwordEditDTO.getNewPassword());
        employeeMapper.update(newEmployee);
        return Result.success();
    }

}
